(19)
(11) EP 1 570 952 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.03.2006 Bulletin 2006/10

(43) Date of publication A2:
07.09.2005 Bulletin 2005/36

(21) Application number: 05002695.4

(22) Date of filing: 09.02.2005
(51) International Patent Classification (IPC): 
B24B 53/08(2006.01)
 B24B 49/16(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 01.03.2004 JP 2004056685

(71) Applicant: TOYODA KOKI KABUSHIKI KAISHA
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Yoritsune, Masahi
    Kariya-shi Aichi-ken (JP)
  • Wakazono, Yoshio
    Kariya-shi Aichi-ken (JP)
  • Kobayashi, Hisanobu
    Kariya-shi Aichi-ken (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Truing method and apparatus


(57) In a truing method and apparatus, an analyzing method is employed to calculate a truing shape from which a grinding surface having been trued with a grinding wheel (9) being rotated at a low rotational speed during a truing operation is deformed to a desired shape due to centrifugal expansion depending on a rotational speed difference when the grinding wheel (9) is rotated at a high rotational speed during a grinding operation. Then, with the grinding wheel (9) being rotated at the low rotational speed, the grinding surface is trued with a truing roll (11) to the calculated truing shape. As a result, the grinding surface of the grinding wheel (9) being rotated at the low rotational speed is trued with the truing roll (11) taking into consideration the centrifugal expansion of the grinding surface which takes place when the grinding wheel (9) is rotatated at the high rotational speed during the grinding operation subsequent to the truing operation.







Search report